Selling games to EB or Gamestop

I've never sold games to EB or Gamestop and I was wondering...how muchcan I expect to get for something like Halo3 or Assassin's Creed? (per game)

I realize the buy back prices vary depending on the popularity and age of the game, but I just want a roundabout figure. Any idea?

Halo 3 and Assassin's creed are still pretty new and last I checked their value is still hovering around $30 store credit.Foolio1

I saw a guy trade in Halo 3 for $10 since he said he beated it already.

Glad you got a good deal